Oil splash pan



G. R. FULLER OIL SPLASH PAN Filed Sept.

Sept. 28 ,1926.

INVENTOR TGM 1e. Faut-,e

ATTORNEY ,Sept-2g; "1926.

1,601,115 G. R. FULLER o IL SPLASH PAN Filed sept: 7, 1922 2 Sheets-Shes?. 2

BY www @www ATTORNEY l ?etented Sept. ZS, 126.

.earner ri-ies I GLA RUSSEL FULLER, OF DETROT, .WIC-EGAN, ASSIGNOE TO STUDEBAKER CGREORA- T1015', A CORGBILTON 0F NEVI' JERSEY. v H

OEL SELAS- PAN.

Appiicanon inea sepa-.aber 7, i922. serial no. 556,695.

, This inventionv relates to improvements in oil splash pans for engines and ha for its object to provide such a splash pan that will prevent excessive splashing' of lubricating oil upon the cylinder walls and crankshaftcheeks and-will have a relatively low-cost ofV production.

, These being among the objects of the present invention, the saine consisting of certain features of construction and combination of parts to be hereinafter described and claimed 'with reference to the laecompainying drawings, which illustrate a suitable embodiment of my inventionnl having the above and other objects ink view.

Figure 1 is a fragmentary longitudinal sectionalview of an internal combustion engine containing' an oil splash pan embodying niy present invention.

Figure 2 is a fragmentary sectional view taken transversely thru an oil trough and immediate co-operating members, other than at the point where the oil is led into the trough.

Figure 3 is a fragmentary transverse sectional view of the engineof Fig. 1 containing an oil splash pan embodying my present invention.

1 is the lower part of an engine cylinder block, 2 is a crank shaft, 8, 4 and', 5 are main crank s aft bearings 6 and 7 are connecting rods, 8 and 9 are gears for driving a cam shaft 1G, 11 'is a pipe for distributing oil to the main bearings 3, 4 and 5, 12 is a cover for the gears S and 9,13 is a ring for throwing oil off the end of the crank shaft 2 and 1,4 is a gutter for leading` this oil back into the oil sump situated in the lower half 16 of the crank case. In the lower half 16 of the crank case and raisedfrom the bottom thereof so as to form an oil sump 15 beneath it is an oil splash pan 17 which is the sub-- ject of the present invention and which is spaced from the crank case 16 by the legs 18 and 19. As is common to this type of lubrication the oil splash pan has troughs 2O running transversely thereof which are provided for holding lubricating oil. As the crank shaft 2 rotates the oil dips 21 on the connecting rods 6 and 7 pass thru the oil in the troughs 2O forcing the oil thru the hollow dips and onto the connecting rod bearing for lubricating and cooling the saine, and in passing thru the oil in the troughs 20, also splaslio-il up into the crank case, thereby lubricating thecylinder walls. Heretofore the construction of the oil splash pans have been such that a very large amount' of oil, often amounting to. an excess, has been splashed out of the troughs by the connecting rod dips. The usual result of this excess amount of oil is that when the pist-ons and piston rings become worn oil pumping or passing of oil into the combustion chamber invariably results with the corresponding disadvantages of fouled spark plugs and kmissing engine. My invention has for one of its objects the prevention of this excess splashing. I do this by cutting a slot 22 in the oil pan, of slightly greater width than the connecting' rod oil dip 21 and turning the edges'of the slot downwardly as sho-wn at 23 in Fig. 2, Below this slot I provide a trough 24 made of a separate piece of Inaterial and fastened to the bodyof the oil pan 17 in any convenient manner such as riveting7 brazing, spot-'welding etc. f This trough member 24 has an arcuate portion for holding the oil and an outwardly projecting' portion which fastens to the body portion 17, r'he' outwardly extending portion is slotted on the sides as at 31 to allow the oil to pass therethru, the top of the arcuate portion constituting the high level of oil in the trough. Then the connecting rod dip passes thru the trough 20 it splashes oil in all directions. This construction is such to allow only an amount of oil limited by the width of the slot 22 to pass up into the crank case. The oil splashed other than thru. the slot 22 is either deflected back into the trough 20 or thru the slots 3l inthe trough sides into the sump 15 preventing an excess of oil from being thrown up onto the cylinder walls and crankshaft cheeks. The downwardly turned the oil splashed onto the upper surface of body portion 17 back into the trough 20.

The method of filling the troughs 20 with oil in the present 'case is to provide' means for leading the surplus oil from the main bearings into the troughs. In one case a pipe 25 carries the oil from the bearing 4 to a shoe shaped trough 26 which leads into the trough 20 thru a depression 27 in the side of the main body portion 17. A portion of the side of the trough member 24 opposite the point where the oil from the shoe shaped trough member 26 enters the trough 2O is not slotted as in the rest of the member 24, thus providing a baiile tor the oil pouring outl of the shoe shaped trough 26 and detleeting it into the trough 20. At 28 a drilled boss leads the oil from the bearing 5 to the bodvo'f the oil pan 17 Where it follows the depression 2T into the trough 20.

rlhe oil splashed out of the trough drains back into the trough or into the oil sump l5 irom which it passes thru the removable strainer Q9 thru the pipe 30 to the oil pump and thence again to thn different bearings.

Formal changes may be made in the speciie embodiment ot the invention described Without departing from the spirit or substance of the broad invention, the scope of which is commensurate With the appent ed claims.

Vh-at I claim is:-

l. In a lubricating system for engines. a crank case, a splash pan contained therein,y members to support and space said splash pan from said crank ease, trough members comprising arcuate portions, sul'istantiallj.'7 horizontal vvalls, vertical vvalls and out- \vardl v7 extending flanges, said flanges on said trough members secured to said splash pan on the under side thereo't, slots in said splash pan communicating with said trough membersand depressions in said splash pan for carrying lubricant to said slots and into said trough members.

ln a lubricating system for engines, a crank case, a splash pan, means to support and space said splash pan Within said crank ease and apart therefrom. transverse slots in said splash pan, depressions in said splash pan for carrying lubricant to said slots. trough members ot greater Width than said slots secured to said splash pan beneath said slots, and openings in said trough members to limit the level ot lubricant therein and to provide an overflow into said crank case.

3. 'In a lubricating system for engines, a crank shalt, piston connecting rods connected thereto, oil dips on said connecting rods, a crank case cover to house said connecting rods and provide an oil reservoir, an oil splash pan vvithin said cover and spaced apart therefrom` slots in said splash pan to receive the oil dips on said connecting rods, trough members to receive oil secured to said splash pan beneath said oil dips and eX- tending beyond the edges of said slots whereby the edges thereof form eaves for said trough members u'herelrvv oil can be, eolleeted by said dips, and openings in said trough members to limit the level of lubricant therein and to provide an overflow into said crank case cover.

-l-. In a lubricating s vstein tor engines. an oil splash pan having separate trough menibers and a main bod)v portion provided with transverse slots having dovfnuardl)v turned edges. said trough members extending bevond the edges ot said slots ivherelrv the edges ot said slots 'form eaves over said troughs, the upper portion ot' .said trough members having openings therein For controlling the level ot lubricant and permitting the escape of lubricant not splashed through said slots b v connecting rod oil dips, and means having con'nnunication vith a crank sha ft ber-"ing for directing lubricant into one ot Ad troughs.

ln a lubricating s vstem Vtor engines, a splash pan having slots 'formed therein;

ough members having arcuate portions, i:nbs-antiallg,v horizontal walls. vertical walls,

outwardly extending flanges. .said anges being eenred to said splash i an a. opposite sides ot said slot and at a .spaced distance therefrom; openings in EQlll cal Walls ot said trough members 'or limiting the level ot' the lubricant therein. and depressions in said splash pan for ca lubricant to said slots and into sai-il tr y (3. ln a lubricating system Ytor en, having a crank shal't supported in bearingsl and a crank 'ase enclosing the same. a splash pan ha ving openings therein and de pressions leading to said oilienii'igs, tnezix communicating vvith at least one oi sr bearings to permit the escape oi lubrcanl, therefrom and a trough directing the lubricant from said means to one ot said openings.

7.111 a lubricating s vstem for engines having a crank shatt supported in bearings and a crank case enclosing the saine, a spl sh pan having openings therein and depressions leading to said openiir 1 a tube connected at one end to one ol .said bearings, and a trough positioned to receive the opposite. end ot said tube and direct lubricant from said bearing to an opening in said splash pan.

Signed by me at Detroit lilichigair l'. $1. A., this 5th day of September, i922.

,TSSCL FULLER. 

